Cleaning up introduction to the learning center.
Removing display of author
Labeling divs

Conflicts:
	_layouts/default.html
Encode properties with spaces instead of underscores.

http://stackoverflow.com/questions/2678551/when-to-encode-space-to-plus-
or-20
AB Tasty as an additional A/B testing platform.
Adding all complete assets for Bootstrap 3.0.3
Adjusting breadcrumb background and separators between crumbs.
Upgrading chevron markup to Bootstrap 3
Removing separator - already handled by CSS.
Moving menu down into the side column.
Restore vanilla bootstrap and adjust screen.css instead.
404 page updated.
Merge pull request #37 from kissmetrics/bootstrap

Bootstrap 3
Updating alert class
Preventing <code> tags from widening tables too much.
Quick/dirty way to fix the main content column width to fill available space.
Rewording how 'already converted' people don't appear in a conversion rate
metric.
Point straight to status subdomain.
Cleaner way to make partials out of the sidebar.
Copying Need Help? assets from KM app
Labeling divs